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    <title>Document</title>
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    <script type="module">
        import {computed} from './computed.js'
        import {reactive} from './reactive.js'
        window.a = reactive({name: 'a', age: 18})
        window.b = computed(() => {
            console.log('重新计算')
            return a.age + 10
        })
        
    </script>
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